| 摘要 |
In accordance with an embodiment of the present invention, a cooling device of a main spindle of a machine tool includes a main spindle having a radiation rib; spindles which are supported on the inside of the main spindle to be able to rotate; a driving unit rotating the spindles; a first pulley connected to the same axis of the spindle; a belt transmitting a rotation force by being connected to the first pulley; a second pulley receiving the rotation force by being connected to the belt; and a fan-shaped blade formed in the second pulley to cool the main spindle when the spindle rotates. |
